def _attach_file_to_resource(self, realm, name, data=None,
                                 filename=None, description=None,
                                 replace=False, content_type=None):
        """Attaches a file to a resource. Assumes the resource exists and
           has already been navigated to."""

        if data is None:
            data = random_page()
        if description is None:
            description = random_sentence()
        if filename is None:
            filename = random_word()

        tc.submit('attachfilebutton', 'attachfile')
        tc.url(self.url + '/attachment/%s/%s/\\?action=new&'
                          'attachfilebutton=Attach\\+file$' % (realm, name))
        fp = StringIO(data)
        tc.formfile('attachment', 'attachment', filename,
                    content_type=content_type, fp=fp)
        tc.formvalue('attachment', 'description', description)
        if replace:
            tc.formvalue('attachment', 'replace', True)
        tc.submit()
        tc.url(self.url + '/attachment/%s/%s/$' % (realm, name))

        return filename

    def create_milestone(self, name=None, due=None):
        """Creates the specified milestone, with a random name if none is
        provided.  Returns the name of the milestone.
        """
        if name == None:
            name = random_unique_camel()
        milestone_url = self.url + "/admin/ticket/milestones"
        tc.go(milestone_url)
        tc.url(milestone_url)
        tc.formvalue('addmilestone', 'name', name)
        if due:
            # TODO: How should we deal with differences in date formats?
            tc.formvalue('addmilestone', 'duedate', due)
        tc.submit()
        tc.notfind(internal_error)
        tc.notfind('Milestone .* already exists')
        tc.url(milestone_url)
        tc.find(name)

        # Make sure it's on the roadmap.
        tc.follow('Roadmap')
        tc.url(self.url + "/roadmap")
        tc.find('Milestone:.*%s' % name)
        tc.follow(name)
        tc.url('%s/milestone/%s' % (self.url, unicode_quote(name)))
        if not due:
            tc.find('No date set')

        return name

 def create_component(self, name=None, owner=None, description=None):
     """Creates the specified component, with a random camel-cased name if
     none is provided.  Returns the name."""
     if name is None:
         name = random_unique_camel()
     component_url = self.url + "/admin/ticket/components"
     tc.go(component_url)
     tc.url(component_url)
     tc.formvalue('addcomponent', 'name', name)
     if owner is not None:
         tc.formvalue('addcomponent', 'owner', owner)
     tc.submit()
     # Verify the component appears in the component list
     tc.url(component_url)
     tc.find(name)
     tc.notfind(internal_error)
     if description is not None:
         tc.follow(r"\b%s\b" % name)
         tc.formvalue('modcomp', 'description', description)
         tc.submit('save')
         tc.url(component_url)
         tc.find("Your changes have been saved.")
         tc.notfind(internal_error)
     # TODO: verify the component shows up in the newticket page
     return name

    def create_ticket(self, summary=None, info=None):
        """Create a new (random) ticket in the test environment.  Returns
        the new ticket number.

        :param summary:
            may optionally be set to the desired summary
        :param info:
            may optionally be set to a dictionary of field value pairs for
            populating the ticket.  ``info['summary']`` overrides summary.

        `summary` and `description` default to randomly-generated values.
        """
        self.go_to_front()
        tc.follow(r"\bNew Ticket\b")
        tc.notfind(internal_error)
        if summary is None:
            summary = random_sentence(5)
        tc.formvalue('propertyform', 'field_summary', summary)
        tc.formvalue('propertyform', 'field_description', random_page())
        if info:
            for field, value in info.items():
                tc.formvalue('propertyform', 'field_%s' % field, value)
        tc.submit('submit')
        # we should be looking at the newly created ticket
        tc.url(self.url + '/ticket/%s' % (self.ticketcount + 1))
        tc.notfind(internal_error)
        # Increment self.ticketcount /after/ we've verified that the ticket
        # was created so a failure does not trigger spurious later
        # failures.
        self.ticketcount += 1

        return self.ticketcount

    def attach_file_to_ticket(self, ticketid, data=None, tempfilename=None,
                              description=None, replace=False,
                              content_type=None):
        """Attaches a file to the given ticket id, with random data if none is
        provided.  Assumes the ticket exists.
        """
        if data is None:
            data = random_page()
        if description is None:
            description = random_sentence()
        if tempfilename is None:
            tempfilename = random_word()

        self.go_to_ticket(ticketid)
        # set the value to what it already is, so that twill will know we
        # want this form.
        tc.formvalue('attachfile', 'action', 'new')
        tc.submit()
        tc.url(self.url + "/attachment/ticket/" \
               "%s/\\?action=new&attachfilebutton=Attach\\+file" % ticketid)
        fp = StringIO(data)
        tc.formfile('attachment', 'attachment', tempfilename,
                    content_type=content_type, fp=fp)
        tc.formvalue('attachment', 'description', description)
        if replace:
            tc.formvalue('attachment', 'replace', True)
        tc.submit()
        tc.url(self.url + '/attachment/ticket/%s/$' % ticketid)
        return tempfilename

 def add_comment(self, ticketid, comment=None):
     """Adds a comment to the given ticket ID, assumes ticket exists."""
     self.go_to_ticket(ticketid)
     if comment is None:
         comment = random_sentence()
     tc.formvalue('propertyform', 'comment', comment)
     tc.submit("submit")
     # Verify we're where we're supposed to be.
     tc.url(self.url + '/ticket/%s#comment:.*' % ticketid)
     return comment

 def clone_ticket(self, ticketid):
     """Create a clone of the given ticket id using the clone button."""
     ticket_url = self.url + '/ticket/%s' % ticketid
     tc.go(ticket_url)
     tc.url(ticket_url)
     tc.formvalue('clone', 'clone', 'Clone')
     tc.submit()
     # we should be looking at the newly created ticket
     self.ticketcount += 1
     tc.url(self.url + "/ticket/%s" % self.ticketcount)
     return self.ticketcount

 def create_version(self, name=None, releasetime=None):
     """Create a new version.  The name defaults to a random camel-cased
     word if not provided."""
     version_admin = self.url + "/admin/ticket/versions"
     if name == None:
         name = random_unique_camel()
     tc.go(version_admin)
     tc.url(version_admin)
     tc.formvalue('addversion', 'name', name)
     if releasetime != None:
         tc.formvalue('addversion', 'time', releasetime)
     tc.submit()
     tc.url(version_admin)
     tc.find(name)
     tc.notfind(internal_error)

 def create_enum(self, kind, name=None):
     """Helper to create the specified enum (used for ``priority``,
     ``severity``, etc). If no name is given, a unique random word is used.
     The name is returned.
     """
     if name == None:
         name = random_unique_camel()
     priority_url = self.url + "/admin/ticket/" + kind
     tc.go(priority_url)
     tc.url(priority_url)
     tc.formvalue('addenum', 'name', name)
     tc.submit()
     tc.url(priority_url)
     tc.find(name)
     tc.notfind(internal_error)
     return name

 def create_report(self, title, query, description):
     """Create a new report with the given title, query, and description"""
     self.go_to_front()
     tc.follow('View Tickets')
     tc.formvalue('create_report', 'action', 'new') # select the right form
     tc.submit()
     tc.find('New Report')
     tc.notfind(internal_error)
     tc.formvalue('edit_report', 'title', title)
     tc.formvalue('edit_report', 'description', description)
     tc.formvalue('edit_report', 'query', query)
     tc.submit()
     reportnum = b.get_url().split('/')[-1]
     # TODO: verify the url is correct
     # TODO: verify the report number is correct
     # TODO: verify the report does not cause an internal error
     # TODO: verify the title appears on the report list
     return reportnum

 def create_component(self, name=None, user=None):
     """Creates the specified component, with a random camel-cased name if
     none is provided.  Returns the name."""
     if name == None:
         name = random_unique_camel()
     component_url = self.url + "/admin/ticket/components"
     tc.go(component_url)
     tc.url(component_url)
     tc.formvalue('addcomponent', 'name', name)
     if user != None:
         tc.formvalue('addcomponent', 'owner', user)
     tc.submit()
     # Verify the component appears in the component list
     tc.url(component_url)
     tc.find(name)
     tc.notfind(internal_error)
     # TODO: verify the component shows up in the newticket page
     return name

    def edit_wiki_page(self, name, content=None, comment=None):
        """Edits a wiki page, with random content is none is provided.
        and a random comment if none is provided. Returns the content.
        """
        if content is None:
            content = random_page()
        if comment is None:
            comment = random_sentence()
        self.go_to_wiki(name)
        tc.formvalue('modifypage', 'action', 'edit')
        tc.submit()
        tc.formvalue('edit', 'text', content)
        tc.formvalue('edit', 'comment', comment)
        tc.submit('save')
        page_url = self.url + '/wiki/%s' % name
        tc.url(page_url+'$')

        return content

 def attach_file_to_wiki(self, name, data=None):
     """Attaches a file to the given wiki page, with random content if none
     is provided.  Assumes the wiki page exists.
     """
     if data == None:
         data = random_page()
     self.go_to_wiki(name)
     # set the value to what it already is, so that twill will know we
     # want this form.
     tc.formvalue('attachfile', 'action', 'new')
     tc.submit()
     tc.url(self.url + "/attachment/wiki/" \
            "%s/\\?action=new&attachfilebutton=Attach\\+file" % name)
     tempfilename = random_word()
     fp = StringIO(data)
     tc.formfile('attachment', 'attachment', tempfilename, fp=fp)
     tc.formvalue('attachment', 'description', random_sentence())
     tc.submit()
     tc.url(self.url + '/attachment/wiki/%s/$' % name)

    def create_wiki_page(self, name=None, content=None, comment=None):
        """Creates a wiki page, with a random unique CamelCase name if none
        is provided, random content if none is provided and a random comment
        if none is provided.  Returns the name of the wiki page.
        """
        if name is None:
            name = random_unique_camel()
        if content is None:
            content = random_page()
        self.go_to_wiki(name)
        tc.find("The page %s does not exist." % name)

        self.edit_wiki_page(name, content, comment)

        # verify the event shows up in the timeline
        self.go_to_timeline()
        tc.formvalue('prefs', 'wiki', True)
        tc.submit()
        tc.find(name + ".*created")

        self.go_to_wiki(name)

        return name

    def create_wiki_page(self, page, content=None):
        """Creates the specified wiki page, with random content if none is
        provided.
        """
        if content == None:
            content = random_page()
        page_url = self.url + "/wiki/" + page
        tc.go(page_url)
        tc.url(page_url)
        tc.find("The page %s does not exist." % page)
        tc.formvalue('modifypage', 'action', 'edit')
        tc.submit()
        tc.url(page_url + '\\?action=edit')

        tc.formvalue('edit', 'text', content)
        tc.submit('save')
        tc.url(page_url+'$')

        # verify the event shows up in the timeline
        self.go_to_timeline()
        tc.formvalue('prefs', 'wiki', True)
        tc.submit()
        tc.find(page + ".*created")

 def quickjump(self, search):
     """Do a quick search to jump to a page."""
     tc.formvalue('search', 'q', search)
     tc.submit()
     tc.notfind(internal_error)

 def ticket_set_milestone(self, ticketid, milestone):
     """Set the milestone on a given ticket."""
     self.go_to_ticket(ticketid)
     tc.formvalue('propertyform', 'milestone', milestone)
     tc.submit('submit')

 def logout(self):
     """Logout"""
     tc.submit('logout', 'logout')
     tc.notfind(internal_error)
     tc.notfind('logged in as')